Add dependabot configuration

Gradle build files were also modified so that the version
for io.spring.dependency-management is not explicitly defined.
This allows dependabot to skip all patch releases.

.github/dependabot.yml

@@ -0,0 +1,32 @@
+version: 2
+updates:
+
+  - package-ecosystem: "maven"
+    directories:
+      - "/initial"
+      - "/complete"
+    ignore:
+      - dependency-name: "*"
+        update-types: ["version-update:semver-patch"]
+    schedule:
+      interval: "monthly"
+    target-branch: "main"
+    groups:
+      guide-dependencies-maven:
+        patterns:
+          - "*"
+
+  - package-ecosystem: "gradle"
+    directories:
+      - "/initial"
+      - "/complete"
+    ignore:
+      - dependency-name: "*"
+        update-types: ["version-update:semver-patch"]
+    schedule:
+      interval: "monthly"
+    target-branch: "main"
+    groups:
+      guide-dependencies-gradle:
+        patterns:
+          - "*"

complete/build.gradle

@@ -1,9 +1,10 @@
 plugins {
 	id 'org.springframework.boot' version '3.3.0'
-	id 'io.spring.dependency-management' version '1.1.5'
 	id 'java'
 }
 
+apply plugin: 'io.spring.dependency-management'
+
 group = 'com.example'
 version = '0.0.1-SNAPSHOT'
 sourceCompatibility = '17'

initial/build.gradle

@@ -1,9 +1,10 @@
 plugins {
 	id 'org.springframework.boot' version '3.3.0'
-	id 'io.spring.dependency-management' version '1.1.5'
 	id 'java'
 }
 
+apply plugin: 'io.spring.dependency-management'
+
 group = 'com.example'
 version = '0.0.1-SNAPSHOT'
 sourceCompatibility = '17'